Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix)
Curtis L. Olson wrote: So my question is this ... what would people think of perhaps doubling the equatorial tile width, and then keeping the width of all tiles fixed to the same value at all latitudes. One *huge* bug that would be fixed is that we would eliminate the unsightly cracks at the boundaries where the tile width changes, since the terragear tools never handled that special case of edge matching correctly. This sounds like a good idea to me. The terrain engine is one of the most important subsystems of a (flight)simulator and trying to get it to work perfectly is almost a necessity. Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix)
- Original Message - From: Erik Hofman [EMAIL PROTECTED] To: FlightGear developers discussions flightgear-devel@flightgear.org Sent: Wednesday, May 04, 2005 12:59 AM Subject: Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix) Curtis L. Olson wrote: So my question is this ... what would people think of perhaps doubling the equatorial tile width, and then keeping the width of all tiles fixed to the same value at all latitudes. One *huge* bug that would be fixed is that we would eliminate the unsightly cracks at the boundaries where the tile width changes, since the terragear tools never handled that special case of edge matching correctly. This sounds like a good idea to me. The terrain engine is one of the most important subsystems of a (flight)simulator and trying to get it to work perfectly is almost a necessity. Also I think we should use LOD shemes for tiles - it's easy to implement and we can use visibility up to 64 km w/o performance penalty. Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix)
Roman Grigoriev wrote: Also I think we should use LOD shemes for tiles - it's easy to implement and we can use visibility up to 64 km w/o performance penalty. What approach would you suggest, a textured (incl. a normal map texture) quad, a simplified and textured tile or something different? Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix)
- Original Message - From: Erik Hofman [EMAIL PROTECTED] To: FlightGear developers discussions flightgear-devel@flightgear.org Sent: Wednesday, May 04, 2005 3:51 AM Subject: Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix) Roman Grigoriev wrote: Also I think we should use LOD shemes for tiles - it's easy to implement and we can use visibility up to 64 km w/o performance penalty. What approach would you suggest, a textured (incl. a normal map texture) quad, a simplified and textured tile or something different? I think we should start with simplified and textured tile. texures can be with DXT1 compression I tried and have no difference in visual. maybe we should have two tiles - 1234hi.btg and 1234low.btw and load them? terragear need some modifications but they are minimal - change tile resolution. I tried normal mapping in flightgear (parallax mapping ) but there are some diffculties with tangent space vectors on complex polygons and some thing are unclear for me. I start working on this http://www.delphi3d.net/articles/viewarticle.php?article=terraintex.htm I want to implement smooth transitions in FGFS. (needs at least multitexturing.) Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix)
On Wed, 4 May 2005 16:12:46 -0700, Roman wrote in message [EMAIL PROTECTED]: - Original Message - From: Erik Hofman [EMAIL PROTECTED] To: FlightGear developers discussions flightgear-devel@flightgear.org Sent: Wednesday, May 04, 2005 3:51 AM Subject: Re: [Flightgear-devel] Tile sizes (was Re: SGBucket::sgBucketDiff fix) Roman Grigoriev wrote: Also I think we should use LOD shemes for tiles - it's easy to implement and we can use visibility up to 64 km w/o performance penalty. What approach would you suggest, a textured (incl. a normal map texture) quad, a simplified and textured tile or something different? I think we should start with simplified and textured tile. texures can be with DXT1 compression I tried and have no difference in visual. maybe we should have two tiles - 1234hi.btg and 1234low.btw and load them? terragear need some modifications but they are minimal - change tile resolution. I tried normal mapping in flightgear (parallax mapping ) but there are some diffculties with tangent space vectors on complex polygons and some thing are unclear for me. I start working on this http://www.delphi3d.net/articles/viewarticle.php?article=terraintex.htm I want to implement smooth transitions in FGFS. (needs at least multitexturing.) ..disregard if I'm too far off base here ;o) ; the which tiles will we see next depends on _where_ we are on which tile, FOV, which way are we looking etc, and manouvering which way are we turning. ..smaller tiles? Are proxy servers a Linux-only thing, or can we expect the other platforms to be able to re-use tiles off proxy like things? ..one way could be combine a proxy etc server with a tile server in a new wee distro to support FG. -- ..med vennlig hilsen = with Kind Regards from Arnt... ;o) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
